Is this the latest update for p50 pro global?

I bought a 2nd hand p50 pro snapdragon today. What is this 6gb of security patches?? 😂😂. Can i also change it to harmony os? I'm from SEA region.

I bought a 2nd hand p50 pro snapdragon today. What is this 6gb of security patches?? 😂😂. Can i also change it to harmony os? I'm from SEA region.